Re: Turns on a dime

: : Would you explain the meaning of the phrase "life turns on a dime" please?

: Life is governed by very small events, just like a dime is a small coin.

The phrase might have a different meaning. A car that's very maneuverable is said to turn on a dime (it can make sharp, precise turns). One who says life turns on a dime may have in mind that events in a person's life can reverse themselves quickly.